Six-minute walking test and the assessment of cardiorespiratory responses during weight-loss programmes in obese children

Purpose. We assessed the exercise tolerance and cardiorespiratory responses during 2‐month weight‐loss programmes using the 6‐minute walking test (6MWT) in obese children. Methods. Twenty‐eight male obese children were randomly assigned to either a control group (C), an energy restriction group (R),...

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Published in:	Physiotherapy research international : the journal for researchers and clinicians in physical therapy Vol. 16; no. 1; pp. 32 - 42
Main Authors:	Elloumi, Mohamed, Makni, Emna, Ounis, Omar Ben, Moalla, Wassim, Zbidi, Abdelrkarim, Zaoueli, Monia, Lac, Gérard, Tabka, Zouhair
Format:	Journal Article
Language:	English
Published:	Chichester, UK John Wiley & Sons, Ltd 01-03-2011
Subjects:	Adolescent Body Composition - physiology Caloric Restriction children Exercise Test - methods Exercise Therapy Heart Rate - physiology Humans Male obesity Obesity - diet therapy Obesity - rehabilitation Oxygen Consumption - physiology six-minute walking test Treatment Outcome Walking - physiology weight loss Weight Loss - physiology
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Summary:	Purpose. We assessed the exercise tolerance and cardiorespiratory responses during 2‐month weight‐loss programmes using the 6‐minute walking test (6MWT) in obese children. Methods. Twenty‐eight male obese children were randomly assigned to either a control group (C), an energy restriction group (R), an exercise training at maximum lipid‐oxidation (LIPOXmax) group (E), or an energy restriction/training group (RE). The body composition, the submaximal incremental cycling exercise, and the 6MWT were performed before and after the 2‐month programme. Results. After the programme, RE group showed a significant improvement of body composition (body weight reduced by 6.3 ± 1.5 kg, p < 0.01), and an increase of 6‐minute walking distance (6MWD) (+13.7%, p < 0.01). Similarly, maximum oxygen uptake calculated according to the American College of Science Medicine guideline (VO2maxACSM) and VO2max predicted from 6MWD were respectively higher (+12.9% and +10.0%, p < 0.01) than the R or E groups. Bland‐Altman analysis highlighted an agreement of these two methods of VO2max measurement. Moreover, in all participants the 6MWD was significantly correlated with VO2maxACSM and LIPOXmax (r = 0.77, p < 0.001 and r = 0.67, p < 0.01; respectively) before the programme as well as their changes in percentage over the programme (r = 0.85 and r = 0.86, p < 0.0001; respectively). Conclusions. We concluded that a 2‐month weight‐loss programme including energy restriction and exercise training targeted at LIPOXmax improved body composition and cardiorespiratory tolerance in obese children. Furthermore, the 6MWT could be considered as a useful and reliable tool for the assessment and the follow‐up of cardiorespiratory responses during weight‐loss programme in obese children. Copyright © 2010 John Wiley & Sons, Ltd.
Bibliography:	ark:/67375/WNG-0PLSK7M1-D istex:F9BE3ADE96D119B4BEEFA921661479A364BB7AA3 ArticleID:PRI470 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-News-1 ObjectType-Feature-3 content type line 23
ISSN:	1358-2267 1471-2865
DOI:	10.1002/pri.470